As of November 6, 2026, Perimeter Group Inc. is a publicly traded company (NYSE: PRM). The largest holder reporting an active stake on Schedule 13D is William N. Thorndike, Jr., at 5.7%. No bankruptcy or receivership appears in its SEC Form 8-K filings. Passive holders reporting on Schedule 13G include The WindAcre Partnership LLC (9.9%), Principal Global Investors (8.2%), Fidelity (FMR) (6.7%) (Schedule 13D, March 10, 2026).
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Is Perimeter Group Inc. a real, registered company?
- Perimeter Solutions, Inc. files with the SEC under CIK 1880319 (its SEC filings).
- Its shares are listed under the ticker PRM on NYSE (SEC company record).
- business address in Clayton, Missouri, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under PERIMETER SOLUTIONS, INC. in our court records and SEC 8-K records (as of 2026-11-06).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names The WindAcre Partnership LLC (filed 2026-08-14).
Who are Perimeter Group Inc.'s owners and officers?
Perimeter Group Inc.: business address in Clayton, Missouri; industry Chemicals & Allied Products (Schedule 13G/A, 2026-08-14).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-08-14 | The Windacre Partnership LLC | 9.9% |
| Schedule 13G/A, 2026-08-05 | Principal Global Investors | 8.2% |
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
| Schedule 13D, 2026-03-10 | William N. Thorndike, Jr. | 5.7% |
| Schedule 13G, 2025-11-05 | Fmr LLC | 6.7% |
Questions about who owns Perimeter Group Inc.
Who owns Perimeter Group Inc.?
On this page, 4 holders' latest ownership filings report 5% or more of Perimeter Group Inc.: The Windacre Partnership LLC (9.9%, Schedule 13G/A, filed 2026-08-14), Principal Global Investors (8.2%, Schedule 13G/A, filed 2026-08-05), Fmr LLC (6.7%, Schedule 13G, filed 2025-11-05) and William N. Thorndike, Jr. (5.7%, Schedule 13D, filed 2026-03-10).
Who are the largest shareholders of Perimeter Group Inc.?
By the share each holder's latest filing reports, the largest holders of Perimeter Group Inc. on this page are The Windacre Partnership LLC (9.9%), Principal Global Investors (8.2%) and Fmr LLC (6.7%).
When did The Windacre Partnership LLC buy into Perimeter Group Inc.?
The filings give report dates, not purchase dates. The earliest filing from The Windacre Partnership LLC on this page is the Schedule 13G/A, filed 2026-08-14, reporting 9.9%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 5 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Which insiders own Perimeter Group Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- WindAcre Partnership Master Fund, LP, a 10% owner: 16,148,621 shares (9.9% of shares outstanding), on a joint filing (Form 4/A, 2026-07-13).
- Wapgp LLC, a 10% owner: 16,148,621 shares (9.9% of shares outstanding), on a joint filing (Form 4/A, 2026-07-13).
- , a 10% owner: 16,148,621 shares (9.9% of shares outstanding), on a joint filing (Form 4/A, 2026-07-13).
- WindAcre General Partner LP, a 10% owner: 16,148,621 shares (9.9% of shares outstanding), on a joint filing (Form 4/A, 2026-07-13).
- Windacre Partnership LLC, a 10% owner: 16,148,621 shares (9.9% of shares outstanding), on a joint filing (Form 4/A, 2026-07-13).
Shares outstanding: 163,821,923 as of 2026-10-30, from the company's latest SEC cover page.
How much has Perimeter Group Inc. raised?
No fundraising or offering filing from Perimeter Group Inc. is on file with us.
Keep reading
More on Perimeter Group Inc. and the records around it.
Perimeter Group Inc. elsewhere on the record
- 5%+ stake filings Aug 2026
Companies that share a holder
- PRINCIPAL GLOBAL INVESTORS also filed stake reports on 19 other companies: Brookfield Infrastructure Partners L.P. (Oct 2026), COLLEGIUM PHARMACEUTICAL, INC (Oct 2026), Hyatt Hotels Corp (Oct 2026)
- FMR LLC also filed stake reports on 761 other companies: ASPEN NEUROSCIENCE INC (Nov 2026), AVALO THERAPEUTICS INC (Nov 2026), BRAZE INC (Nov 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
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